<template>
    <el-container class="home-container">
      <!-- 头部区域 -->
  <el-header>
    <div>
      <img src="../assets/logo.png" alt="">
      <span>电商后台管理系统</span>
    </div>
    <el-button type="info" @click="logout">退出</el-button> 
    </el-header>
    <!-- 主体区域 -->
  <el-container>
    <!-- 侧边栏 -->
    <el-aside class="aside" :width="isCollapse ? '64px':'200px'">
      <div class="toggle-button" @click="toggleCollp">|||</div>
      <!-- 侧边栏菜单区域 -->

    <el-menu
    :collapse-transition="false"
    :collapse="isCollapse"
      background-color="#333744"
      text-color="#fff"
      active-text-color="#409EFF"
      unique-opened
      router
      :default-active="activePath"
      >
      <!-- 一级菜单 -->
      <el-submenu :index="item.id+''" v-for="item in menulist" :key="item.id">
        <!-- 一级菜单模板区域 -->
        <template slot="title">
          <i :class="iconsObj[item.id]"></i>
          <span>{{item.authName}}</span>
        </template>
       <!--二级菜单  -->
          <el-menu-item 
          :index="'/'+subitem.path"
           v-for="subitem in item.children"
            :key="subitem.id"
            @click="saveNavState('/'+subitem.path)"
            >
            <template slot="title">
          <i class="el-icon-menu"></i>
          <span>{{subitem.authName}}</span>
        </template>
          </el-menu-item>

      </el-submenu>
    </el-menu>


    </el-aside>
    <!-- 右侧内容主体 -->
    <el-main>
      <router-view></router-view>
    </el-main>
  </el-container>
</el-container>


</template>

<script>
export default {
  data(){
    return{
      menulist:[],
      iconsObj:{
        '125':'iconfont icon-user',
        '103':'iconfont icon-tijikongjian',
        '101':'iconfont icon-shangpin',
        '102':'iconfont icon-danju',
        '145':'iconfont icon-baobiao'
      },
      isCollapse:false,//是否折叠
    activePath:''
    }
  },
      created(){
        this.getMenuList()
        this.activePath = window.sessionStorage.getItem('activePath')
      },
      methods:{
        //获取所有菜单
      async  getMenuList(){
        const {data:res} = await this.$http.get('menus')
        if(res.meta.status !== 200) return this.$message.error(res.meta.msg)
        this.menulist = res.data
        },
        logout(){
          window.sessionStorage.clear()
          this.$router.push('/login')
        },
        toggleCollp(){
            this.isCollapse = !this.isCollapse
        },
        saveNavState(activePath){
          window.sessionStorage.setItem('activePath',activePath)
          this.activePath = activePath
        }
      }
}
</script>

<style lang='less' scoped>
.aside{
  // transition-property: width;
  //   transition-duration: 0.5s;
  transition: width 0.5s;
}
.el-menu{
  border-right:none;
}
.el-header{
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items: center;
  color: white;
  font-size: 20px;
  >div{
  display: flex;
  align-items: center;
  height: 100%;
  >img{
    height: 100%;
    padding-left: 15px;
    margin-right: 15px;
  }
  }

}
.el-aside{
  background-color: #333744;
}
.el-main{
  background-color: #eaedf1;
}
.home-container{
  height: 100%;
}
.iconfont{
  margin-right: 10px;
}
.toggle-button{
  background-color: #4a5064;
  font-size: 10px;
  line-height: 24px;
  color: #fff;
  text-align: center;
  letter-spacing: 0.2em;
  cursor: pointer;
}
</style>